【正文】
security of the network being promised. In situations in which a pany or individual has legal obligations to keep information confidential, there may be legal problems, even criminal ones, as a result. Two examples are the HIPAA regulations in the . with regard to health data, and the more general European Union data privacy regulations which apply to even marketing and billing information and extend to those who share that data elsewhere.One way to reduce the consequences from a lost or stolen laptop is to use one of the Thin client laptops now sold by several panies. These can allow mobile workers to access securitysensitive databases with less risk of lost or promised data should the laptop be lost or stolen since it has no local storage.TunnelingTunneling is the transmission of data through a public network in such a way that routing nodes in the public network are unaware that the transmission is part of a private network. Tunneling is generally donedata and protocol information within the public network protocol data so that the tunneled data is not available to anyone examining the transmitted data frames. Tunneling allows the use of public networks (eg, the Internet), to carry data on behalf of users as though they had access to a 39。s network to protect the traffic. In a sense, these are an elaboration of traditional network and system administration work.Security on the client side must be tightened and enforced, lest security be lost at any of a multitude of machines and devices. This has been termed Central Client Administration, and Security Policy Enforcement. It is mon for a pany to require that each employee wishing to use their VPN outside pany offices (eg, from home) first install an approved firewall (often hardware). Some organizations with especially sensitive data, such as healthcare panies, even arrange for an employee39。s internal network, other security and management services are sometimes included as part of the package. Examples include keeping antivirus and antispyware programs updated on each client39。s home network, or